random walk 3D [boundary + clusters]

Random Walk 1.4
Inspired by “The Nature of Code” by Daniel Shiffman and it’s python translator Jake Hebbert.
Using C# in Grasshopper for Rhinoceros

//	Philipp Siedler
//	Daniel Shiffman "The Nature of Code"
//	Random Walk 1.4
private void RunScript(int seed, int time, ref object A, ref object B, ref object C, ref object D, ref object E)
  {
    List <Point3d> pList = new List<Point3d>();
    List <Point3d> pListEx = new List<Point3d>();

    List <int> xList = new List<int>();
    List <int> indexList = new List<int>();

    Walker w = new Walker();
    Random random = new Random(seed);

    int counter = 0;
    indexList.Add(counter);

    for(int i = 0; i < time; i++){       int rnd = random.Next(0, 7);       w.step(rnd);       if(w.boundRebounceCount > 0){
        pListEx.Add(w.pos());
      }
      else{
        pList.Add(w.pos());
      }
      counter++;

      if(indexList.Count() == 1){
        indexList[0] = counter;
      }

      if(w.x == 0 && w.y == 0 && w.z == 1){
        indexList.Add(counter);
        counter = 0;
      }
    }

    A = pList;
    B = xList;
    C = counter;
    D = indexList;
    E = pListEx;

  }

 public class Walker
  {
    public double x;
    public double y;
    public double z;
    public int bound;
    public int upperBound;
    public int rnd;
    public int boundRebounceCount;
    public int explosionNum;

    //Constructor that takes arguments.
    public Walker(){
      x = 1.0;
      y = 1.0;
      z = 1.0;
      bound = 10;
      upperBound = 100;
      rnd = 0;
      boundRebounceCount = 0;
    }

    public Point3d pos(){
      Point3d posPt = new Point3d(x, y, z);
      return posPt;
    }

    public int step(int rnd){

      int choice = rnd;
      int explosionNum = 100;

      //GROWING UP

      if(boundRebounceCount == 0){
        if (choice <= 0){
          x++;
        }
        else if(choice <= 1){
          x--;
        }
        else if(choice <= 2){
          y++;
        }
        else if(choice <= 3){           y--;         }         else if(z > 5 && choice <= 4){
          z--;
        }

        else if(choice <= 5){           z = z + 3;         }         if (x >= bound || x <= -bound){           boundRebounceCount = explosionNum;         }         if (y >= bound || y <= -bound){
          boundRebounceCount = explosionNum;
        }
        if (z <= 0 || z >= upperBound){
          boundRebounceCount = explosionNum;
        }
      }

      //EXPLODING
      double factor = 1;

      if(boundRebounceCount > 1){
        if (x >= -bound && choice == 0){
          x = x - factor;
          boundRebounceCount--;
        }
        else if(x <= bound && choice == 1){           x = x + factor;           boundRebounceCount--;         }         else if(y >= -bound && choice == 2){
          y = y - factor;
          boundRebounceCount--;
        }
        else if(y <= bound && choice == 3){
          y = y + factor;
          boundRebounceCount--;
        }
        else if(z <= upperBound && choice == 4){           z = z + factor;           boundRebounceCount--;         }         else if(z >= 0 && choice == 5){
          if(z > 10){
            z = z - factor;
            boundRebounceCount--;
          }
        }
      }
      if(boundRebounceCount == 1){
        x = 0;
        y = 0;
        z = 1;
        boundRebounceCount = 0;
      }

      return choice;
    }
  }

Output:

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